PC Carbine is it really metal to metal for bolt block?

[WayneSmithers]

I have only fired 80 rounds in my new PC Carbine and was focused on accuracy. I didn’t notice any clacking or harsh recoil but today I see these TK and Mcarbo buffers with the suggestion they prevent a metal to metal smack during cycling. Does the bolt smack the factory buffer every time or perhaps just with higher pressure loads?

I vaguely recall a similar thing on my mini thirty where I added a piece of leather over any purchased solution. Any DIY solutions if this buffer contact is worth improving?

 

[Mobuck]

I would assume the 'buffer' is there to stop bolt travel???

 

[RugerForMe]

They have a hard rubber bolt stop from the factory.

I did the full M-Carbo kit when I first got my PC carbine. And picked up a Vorquartsen trigger group, I don't think they are available anymore.